Pi bracelet

Celebrate everyone’s favorite irrational number with a flexible TPU bracelet embossed with the digits of π! This one-piece print includes an integrated clasp with multiple fit positions for a comfortable and adjustable wear. It prints flat and can be paused mid-print for a clean two-color effect—perfect for making the digits pop.

This model was designed in OpenSCAD and is released as open source. You can check out the code, remix your own version with different numbers or messages, or even customize it further for math class giveaways or Pi Day events.

💻 Source & customizer files here:

👉 https://github.com/jmcpheron/counted-out-pi

Works best in flexible filament like TPU or TPE.